Toyota Sienna Service Manual: Terminals of ECU

Toyota Sienna Service Manual / Cruise control / Dynamic laser cruise control system / Terminals of ECU

1. CHECK DISTANCE CONTROL ECU

CHECK DISTANCE CONTROL ECU

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK DISTANCE CONTROL ECU

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

2. CHECK ECM

CHECK ECM

If the value is not within the specified range, the ECM may have a malfunction.

3. CHECK LASER SENSOR

CHECK LASER SENSOR

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK LASER SENSOR

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

4. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

Problem symptoms table

HINT: Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Re ...

Diagnosis system

1. DIAGNOSIS FUNCTION The diagnosis function makes the light and the multi-information display come on, and the CRUISE main indicator light blink as shown in the illustration. When ...

Other materials:

Radio Broadcast cannot be Received or Poor Reception
INSPECTION PROCEDURE 1 CHECK RADIO AND NAVIGATION ASSEMBLY Check the radio's automatic station search function. Check the radio's automatic station search function by activating it. OK: The radio's automatic station search function works properly. 2 INSPECT RADIO AND NAVIGATION AS ...

Installation
1. INSTALL REAR AXLE HUB & BEARING ASSEMBLY LH (a) Install the hub & bearing assembly LH with the 4 bolts. Torque: 56 N*m (571 kgf*cm, 41 ft.*lbf) 2. INSPECT BEARING BACKLASH (See page AH-19) 3. INSPECT AXLE HUB DEVIATION (See page AH-19) 4. INSTALL REAR DRIVE SHAFT ASSEMBLY LH (Se ...

Open in Pump Motor Circuit
DTC C1251/51 Open in Pump Motor Circuit DESCRIPTION The motor relay (semiconductor relay) is housed in the brake actuator assembly and drives the pump motor based on a signal from the skid control ECU. WIRING DIAGRAM Refer to DTCs C0273/13 and C0274/14 (See page BC-31). INSPECTION PROCED ...